08e7a7f1a0
* cranelift: Add inline stack probe for x64 * cranelift: Cleanups comments Thanks @jameysharp!
67 lines
1.3 KiB
Plaintext
67 lines
1.3 KiB
Plaintext
test compile precise-output
|
|
set enable_probestack=true
|
|
set probestack_strategy=inline
|
|
; This is the default and is equivalent to a page size of 4096
|
|
set probestack_size_log2=12
|
|
target x86_64
|
|
|
|
|
|
; If the stack size is just one page, we can avoid the stack probe entirely
|
|
function %single_page() -> i64 system_v {
|
|
ss0 = explicit_slot 2048
|
|
|
|
block0:
|
|
v1 = stack_addr.i64 ss0
|
|
return v1
|
|
}
|
|
|
|
; pushq %rbp
|
|
; movq %rsp, %rbp
|
|
; subq %rsp, $2048, %rsp
|
|
; block0:
|
|
; lea rsp(0 + virtual offset), %rax
|
|
; addq %rsp, $2048, %rsp
|
|
; movq %rbp, %rsp
|
|
; popq %rbp
|
|
; ret
|
|
|
|
function %unrolled() -> i64 system_v {
|
|
ss0 = explicit_slot 12288
|
|
|
|
block0:
|
|
v1 = stack_addr.i64 ss0
|
|
return v1
|
|
}
|
|
|
|
; pushq %rbp
|
|
; movq %rsp, %rbp
|
|
; movl %esp, -4096(%rsp)
|
|
; movl %esp, -8192(%rsp)
|
|
; movl %esp, -12288(%rsp)
|
|
; subq %rsp, $12288, %rsp
|
|
; block0:
|
|
; lea rsp(0 + virtual offset), %rax
|
|
; addq %rsp, $12288, %rsp
|
|
; movq %rbp, %rsp
|
|
; popq %rbp
|
|
; ret
|
|
|
|
function %large() -> i64 system_v {
|
|
ss0 = explicit_slot 100000
|
|
|
|
block0:
|
|
v1 = stack_addr.i64 ss0
|
|
return v1
|
|
}
|
|
|
|
; pushq %rbp
|
|
; movq %rsp, %rbp
|
|
; stack_probe_loop %r11, frame_size=100000, guard_size=4096
|
|
; subq %rsp, $100000, %rsp
|
|
; block0:
|
|
; lea rsp(0 + virtual offset), %rax
|
|
; addq %rsp, $100000, %rsp
|
|
; movq %rbp, %rsp
|
|
; popq %rbp
|
|
; ret
|